I know I'm overkilling with my 60C heli packs, but they do come down cool and never bog no matter what I do in the air. I would imagine that your lighter pack, which are more powerful are more expensive?

My Katana MD performs much better with 1550mah 25C packs vs 2000mah 30C packs simply because of the power to weight ratio. Surprisingly, my run times are roughly the same, but I can fly more aggressive with it using the 1550's.

No, Thunder Power packs are not inexpensive, but not only are they lighter and give more punch (IMO), but they also have a great 2 year warranty...and...even a crash warranty...I.E., if you crash a plane and destroy the battery, you can send them a photo of the battery, and they will sell you another identical battery for 1/2 price....

Ok...I got my first test batch of battery boxes/trays from the laser cutter, they go together very nicely, and will fit in the plane very well. I did make a small "goof" on the cad drawing, which resulted in two of the pieces not over-lapping like they should. (I have ordered new end pieces to correct the flaw) These are very light at 24.5 grams, and make securing your batteries much easier for those whose batteries are way up under the cowl, as you only need one strap.

I have just ordered new end pieces for them, and will sell the complete units as they should be, for $22.00 each shipped via USPS mail in the conus.

Yes, which is why there are some scorch marks. I could have them cut from Liteply, which would alleviate it, however, I would then have to increase the thickness to gain the strength that the 1/16" Birch plywood gives me.